Pumping apparatus



G. A. BUVINGER ET AL PUMPING APPARATUS Original F iled Nov, 18, 1921 W BQZN.

Patented Dec. 21, 1926.

UNITED. srAT-Es GEORGE A. nuvmenn AND CLARENCE WARNER, or DAYTON, OHIO, ssienoas 'ro DELCO-LIGHT COMPANY, 01? DAYTON,

OHIO, CORPORATION OF DELAWARE.

- rename arraaarosj Original application filed November 18, 1921, Seri September 4, 1923.

The present ,invention relates to pumps and particularly to pumps. of the reciproeating piston type'and .is a division of the copendmg application Serial No. 516,159 filed'November 18, 1921.

One of the objects of the present invention is to prevent the contamination of the water within the pump chamber by lubricant from the driving mechanism lubricant chamber and vice versa. I

Another object of the invention is to facilitate theremoval of the piston and piston rod from the pum v.

Other and further objects of the present invention will be apparent from thevfollowing description, reference being bad ,to the accompanying drawings, wherein a preferred embodiment of the present invention is clearlyshown.

In the drawings:

' Fig. 1 is a longitudinal sectional viewof a portion of a pump unit, the pump piston rod being shown in one of its extreme opersting positions; and v Fig. 2 is a fragmentary sectional view showing the piston-rod at its otherextreme position. The present. invention contemplates the provision of a pump unit which includes a driving mechanism chamber or casing and a pump head. The pump head is provided with a cylinder and piston,-the' piston being connected with driving mechanism. in the casing by a reciprocating -piston rod. The casing and pump head are s aced at such. a distance that the part of t e rod which enters the housing will not enter the pump head and vice versa, whereby the liquid contents of the housing and pump head is not apt to be transferredby the piston rod from one chamber to the other.

The invention further aims to provide a iston rod having'a designated place which Is readily visible and at which a wrench may be'applied-for the manipulation of same for assembling or disassem ling purposes.

Referring to the drawings, 20 isv a casing for driving mechanism and forms a reservoir 21 for lubricant. The driving mechanism comprises a worm 22 suitably started in bearings, one of which is shown at 23. Worm 22 is rotated in any suitable manner and drives a worm gear 24. Worm gear 24 is carried on a shaft 25 and drives an eccenal No; 516,158. Divided and this application filed Serial No. 660,708.

tric 26 which is connected to a crosshead 27 by an eccentric strap 28 which herein funct IQIIS as a connecting rod. Crosshead 27 is slldably mounted within a sleeve 29 formed integrally with the-casing 20.-

llnflasing 20 also forms a drip box-30 to which is detachably secured the pump head 33. Pump head 33 receives a cylinder 34 and a piston 35 which when reciprocated Wlll cause water to be' drawn through the pipe 36 and to be forced out of pipe 37. A

pump piston rod 38 extends. from the reser-. voir 21 through drip box 30 into the um head 33. A packing box 39 or the llke is provided bet-ween the dripbox 30 and reservoir 21; and a packing box 40 or the like is provlded between drip box and the pump ead 33. These packing boxessurround the piston rod 38 and are subjected to the liquid within the respective chambers and norm-ally prevent lubricant and water from escaping from the driving mechanism casing any liquid should escape, it will collect in the drip box 30 and may be drained oil through a drain 41.

20 and the pump head 33, respectively. If

The drip box 30 1501 such a leilgth that I the packing boxes canbe placed at a distance far enough apart with respect to the length of the reciprocating stroke of the piston rod .38, that the portion of the piston rod 38 which enters oneofthe packings will not enter the other. In this manner, that portion of the piston rod which'iomesin con- C tact with the oil packing 39 does not come in contact with the water packing 40, and

therefore no oil will be carried to the water packing and thence tothe pump-head 33.

ikewise, that portion of the piston rod.38 enter ngthe water packing cannot-enter the 011 packm and W111 notcarry water into the 011 pac ng and thence into the lubricant reservoir 21. In this manner, there is a portion of the rod between the packings 39 and 40 WhlCll does not enter either of the packmgs. This portion is squared as at 42 to form a tool holdfor a wrench. I Tool hold lbs at thetool hold 42. If the attendant should use a wrench which would mutilate the tool wrench or the like.

hold 42, no damage would be done to the packings because the tool hold does not enter eithenof them. If no tool hold were provided, it would be necessary to use a Stillson This type of wrench is very apt to mutilate the piston rod; also without the tool hold no special place would be indicated at which the wrench should be applied; and, it will often happen that the 4 rod will be mutilated at a place whichenters: the packing, and thereby damage samedue to the reciprocation of the mutilated portion of the piston rod within the packing.

While the form of mechanism herein shown and described constitutes a preferred embodiment of one form of invention, it is to be understood that other forms might be ado ted and various changes and alterations ma e in the shape, size, and proportion of the elements therein without departing from the spirit and scope of the invention.

vWhat is claimed is as follows:

' 1. In a device of the kind described, a pump unit comprising in combination, a cylinder and piston, a crosshead and guidetherefor, a piston rod connecting said guide and piston, and separate packing for the rod adjacent the guide and cylinder respectively,

' the guide and cylinder being located at such a distance from one another that no portion of the 'rod entering the packing adjacent said cylilder can enter the packing adjacent the u e. v Q. In a device of the kind described, a pump unit comprising in combination a pump head; a casing adapted to contain a quantity of lubricant; a drip box located between the casing and pump head; reciprocating means extending from the casing to the'pump head; and separate packing in the pump head and in the casing respectively surrounding the reciprocating means, saidv drip box being of such length that no portion of the reciprocating means entering one of the packings can enter the other when the said reciprocating means moves in either direction.-'

' 3. A pump unit comprising a chamber, a

reciprocating member entering said chamber, a packing about the reciprocating memher, said reciprocating member being provided with a tool ho'ld onthat portion thereof which does not enter the packing.

4. A pump unit comprising two spaced chambers, a reciprocating member between and enteringsaid chambers, packing about the reciprocating member at the entrance to said chambers, said reciprocating member being provided with a tool hold on that portion thereof which does not enter either packing upon movement'of said member in either'd-irection. ,7

5. A pump unit comprising two spaced and entering said chambers, packing in one of said chambers for said reciprocating member, said reciprocating member being provided with a tool hold on a portion that does not enter said packing.

6. In a device of the kind described, a pump unitcomprising'two spaced chambers, a reciprocating member between and entering said chambers, packing about the recipsignatures.v

GEORGE A. BUVINGER. CLARENCE WARNER.

chambers, a reciprocating member between 

